A compatibilized active hydrogen compound-­alkylene glycol composition comprises components (A) a relatively high equivalent weight material having an average of at least about 1.8 active hydrogen containing groups per molecule and a weight from about 500 to about 5000 per active hydrogen containing group; (B) an alkylene glycol which is incompatible with component (A) at the relative proportions thereof present in the composition; and (C) a compatibilizing and catalytic amount of an additive containing (1) a urea compound and (2) a transition metal salt of a carboxylic acid wherein said metal is selected from Groups I-B, II-B, V-A, IV-B, V-B, VI-B, VII-B or VIII of the Periodic Table of the Elements; said composition containing a sufficient quantity of at least one amine group-containing material such that component (2) is soluble in said composition. Such compositions are useful in producing poloyurethanes, particularly polyurethanes exhibiting relatively short demold times and good mold release properties. Unlike prior art compositions, the present compositions can generally be stored without substantial loss of activity.

A compatibilized active hydrogen compound-­alkylene glycol composition comprises components (A) a relatively high equivalent weight material having an average of at least about 1.8 active hydrogen-containing groups per molecule and a weight of from 500 to 5000 per active hydrogen-containing group; (B) an alkylene glycol which is incompatible with component (A) at the relative proportions thereof present in the composition; and (C) a compatibilizing amount of at least one thiourea compound. Preferably the composition also contains at least one transition metal salt of a carboxylic acid wherein said metal is selected from Groups I-B, II-B, V-A, IV-B, V-B, VI-B, VII-B or VIII of the Periodic Table of the Elements. The composition preferably also contains a sufficient quantity of at least one amine group-containing material that the salt is soluble in said composition. Such compositions are useful in producing polyurethanes, particularly polyurethanes exhibiting relatively short demold times and good mold release properties. Unlike prior art compositions, the present compositions can be stored without substantial loss of activity.

Disclosed is the compatibilizing of an incompatible blend of a long-­chain polyether polyol and a short chain diol by providing that the polyether polyol comprises at least two polyoxypropylene triols, one of which has a molecular weight of between about 2,000 and 8,000, the second of which has a molecular weight of between about 300 and 900. The blend is fluid and substantially devoid of polyoxyethylene polyol content.

This invention relates to stabilizers for normally incompatible blends of polyether polyols and alkylene glycol chain extender which are selected from: (a) unsubstituted or ether-substituted aliphatic or cycloaliphatic primary mono-amine compounds containing from about 4 to about 8 carbon atoms; (b) unsubstituted or ether-substituted aliphatic or cycloaliphatic secondary mono-amine compounds containing from about 6 to about 12 carbon atoms; (c) alkyl diethanol amines in which the alkyl group contains from about 2 to about 8 carbon atoms; (d) dialkyl hydroxyl amines containing about 4 to about 10 carbon atoms; (e) trialkylamines in which each alkyl group has from about 2 to about 4 carbon atoms and (f) diethanolamine.

This invention also relates to a polyurethane polymer which is a reaction product of a polyisocyanate and a polyether-alkylene glycol chain extender blend which blend is stabilized with the stabilizer described previously.

This invention relates to stabilizers for normally incompatible blends of polyether polyols and alkylene glycol chain extender which are selected from: (a) unsubstituted or ether-substituted aliphatic or cycloaliphatic primary mono-amine compounds containing from about 4 to about 8 carbon atoms; (b) unsubstituted or ether-substituted aliphatic or cycloaliphatic secondary mono-amine compounds containing from about 6 to about 12 carbon atoms; (c) alkyl diethanol amines in which the alkyl group contains from about 2 to about 8 carbon atoms; (d) dialkyl hydroxyl amines containing about 4 to about 10 carbon atoms; (e) trialkylamines in which each alkyl group has from about 2 to about 4 carbon atoms and (f) diethanolamine.

This invention also relates to a polyurethane polymer which is a reaction product of a polyisocyanate and a polyether-alkylene glycol chain extender blend which blend is stabilized with the stabilizer described previously.

Die Erfindung betrifft neue, homogen lagerstabile, geringe Mengen an Salzen enthaltende Gemische mit hoher Misch-Hydroxyl-Zahl bzw. Misch-Hydroxyl/Amin-Zahl und hohem Gehalt an di- und/oder polyfunktionellen, niedermolekularen Diolen, aus im wesentlichen höhermolekularen (Molekulargewichte 400 bis 12000) Polyoxyalkylen-polyolen, -polyolaminen und/oder -polyaminen auf Basis von Alkyloxiranen, bevorzugt überwiegend endständig mit Oxyethylengruppen modifizierten Polyoxypropylenpolyolen, oder Polyolaminen bzw. Polyaminen, in welchen die Hydroxylgruppen der Polyoxyalkylen-polyole ganz oder teilweise durch primäre und/oder sekundäre Aminogruppen und/oder -O(CH₂)₃ NH₂-Gruppen ersetzt sind, polyfunktionellen Hydroxylverbindungen mit niedrigen Molekulargewichten von 62 bis 399, bevorzugt Ethylenglykol und/oder Butandioi-1,4 und geringen Mengen an Salzen, insbesondere Kaliumacetat oder Kaliumchlorid, wobei die Gemische auch weitere niedermolekulare Kettenverlängerungsmittel, vorzugsweise aromatische Diamine, enthalten können.

Weiterer Erfindungsgegenstand ist die Verwendung dieser Gemische zur Herstellung von Polyurethanen, vorzugsweise von zelligen Kunststoffen mit geschlossener Oberfläche und gegebenenfalls integraler Dichteverteilung (nach dem RIM-Verfahren).

Die Erfindung betrifft neue, homogen lagerstabile Salze enthaltende Polyolgemische mit hoher Misch-OH-Zahl und hohem Ethylenglykol- und/oder Butandiol-1,4-Gehalt aus höhermolekularen Polyoxyalkylenpolyolen der OH-Zahl 20 bis 210 mit mindestens 5 Gew.-%, überwiegend oder ausschließlich endständigen Oxyethylenblöcken, in Abmischungen mit Umsetzungsprodukten von Ethylenglykol und/ oder Butandiol-1,4 und 0,05 bis 0,5 Mol Alkyloxiranen, vorzugsweise Propylenoxid. Weiterer Erfindungsgegenstand ist die Verwendung dieser Polyolgemische zur Herstellung von Polyurethan-Kunststoffen.

Phase stable compositions containing a paraffinic polyol chain extender, e.g., 1,4-butanediol, and an isocyanate-reactive prepolymer containing hydroxy and epoxy groups are formed by heating the polyol and prepolymer in the presence of one another to yield the phase stable composition. The composition, when reacted with a polyisocyanate, yields poly(oxazolidonelurethane) thermoset compositions.